QuickhostUK - Orphan VPS causes trouble | Algorithms, Blockchain and Cloud

In last post, QuickhostUK is kind to upgrade my VPS for free.

I noticed from this morning that the SSH connection to the server keeps disconnecting for no reason.

ssh-disconnecting

Also, the posts (files/database) in the last 7 days since last upgrade were gone. And the strange thing is that the server connection keeps remembering/forgetting the latest few posts every few minutes. It is unstable.

I contacted the QuickhostUK support but they didn’t know the cause as well.

The vps is basically an entire server with its own hardware and operating system. We provide a virtual container for this to run in. We have no control over what you run inside this container. You can run any OS with any any software or services. 
Please note this is not a managed vps so we do not manage your OS or your software or services running on it. 
You may need to check your configuration and or restore a backup if needed. 
I hope this helps clarify.

I replied:

I understand.  But the problem is that it was working fine before  (i didn't make any changes) and it suddenly is not working after   it is moved to SSD - cloud platform.

I tried to make changes and it was reverted back to historical state. The VPS seems unstable to me.

This is not related to VPS configuration because anything I change now will be lost somewhen later.

Luckily, after I login to control panel, I suddenly realise something and guess that it might be due to the fact that system still uses the previous orphan VPS node (It was offline on the day when upgrade was completed but somehow it was turned back online probably because of system reboot). All data are preserved, which is the most important thing.